OFFSET
1,2
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..5000
MATHEMATICA
Select[Range[1000], Mod[Length[Split[IntegerDigits[#, 2]]], 7]==1&] (* Harvey P. Dale, Nov 18 2019 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved